Friction coefficient and sliding wear of AlTiN coating under various lubrication conditions

Wang, Xin; Kwon, Patrick; Schrock, David J.; Kim, Dave

doi:10.1016/j.wear.2013.03.050

Cited by 52 publications

(19 citation statements)

References 16 publications

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“…In addition, the wear debris are probably removed from the material via plastic deformation to accumulate on the worn surface, forming a debris re-embedded layer. The debris re-embedded layer can effectively decrease the abrasive wear loss of the worn surface [22], and the removal of the layer can also cause the friction coefficient to revert back to the low value [23]. EDS analyses of area 4 and 5 reveal the presence of Ni, Al (substrate), C (1.8 and 2.0 wt%), Fe and oxygen.…”

Section: Resultsmentioning

confidence: 99%

Research on the Thickness of the Friction Layer of Ni3Al Matrix Composites with Graphene Nanoplatelets

et al. 2015

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Dry sliding tribological tests of Ni 3 Al matrix composites (NMCs) with/without graphene nanoplatelets (GNPs) under different working conditions are undertaken in this article. The results show that GNPs in NMCs make a major contribution to the formation of the friction layer, which is responsible for the reduction of the friction coefficient and improvement of wear resistance. In addition, with the increase in the sliding velocity and normal load, the friction coefficient decreases to a stable value and the wear rate increases to a stable value. This article also examines the possibility of describing the formation of the friction layer during the sliding process. The formation of the friction layer can be divided into two processes: the formation of the fine grain layer and the material loss of the surface layer. The strain rate intensity factor is used to describe the formation of the fine grain layer, and the functional relation of the material loss of the surface layer is obtained by the experimental data. As a result, a specific formula for calculating the thickness of the friction layer of NMCs with GNPs is found.

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Section: Resultsmentioning

confidence: 99%

Research on the Thickness of the Friction Layer of Ni3Al Matrix Composites with Graphene Nanoplatelets

et al. 2015

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“…The fitting peaks of C1s spectra at 288.4, 285.6, and 284.4 eV could be attributed to C¼O, C-O, and C¼C bonds, respectively, [19,20] while the broad peak between 292 and 296 eV was ascribed to -CF 3 group. [15] By integration, the atomic concentration of C in CF 3 group at 200°C was obtained, which was as high as 16.66%, and the atomic concentration decreased with the decrease of temperature (Table 2). Then the conjecture was put forward [15] that with the increase of temperature, as well as friction heat, chemical changes happened to Fomblin M30 and certain amount of F atom formed on the interface.…”

Section: Friction and Wear Behavior Under Lubricated Conditionsmentioning

confidence: 96%

“…Further, among the investigation of friction and wear behavior of IL-lubricated DLC coating under different temperatures, higher friction coefficients were obtained at low temperatures because of the increase in viscosity, while mild graphitization led to the lowest friction coefficient at 100°C. [15] However, erosive wear often occurs in lubricated condition, when there is caustic component included in the lubricating oil. [16,17] The erodent could react with the materials, and the service life shortens as the reactants fall off from the surface of the material.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on friction and wear behaviors of polyimide (PI)-based solid-liquid lubricating materials

Zheng

Wang

et al. 2015

Polym. Adv. Technol.

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The tribological properties of polyimide (PI) under four oils (including two perfluoropolyether oils and two silicon oils) lubricated conditions were comparatively investigated at room temperature in vacuum and Fomblin M30 and chlorine‐containing silicon oil were selected to study the friction and wear behaviors of PI‐based solid–liquid lubricants against steel at different temperatures in vacuum. Significant improvement in tribological performance of PI was found under oil‐lubricated conditions. The friction coefficient increased as the test temperature decreased for the mobility of liquid lubricant was limited at lower temperatures, while the wear rate exhibited distinct rule. Besides, no tribochemical reaction was detected at the contact surface of PI and chlorine‐containing silicon oil. However, the –CF3 and fluorinated CO groups were detected on the worn tracks of PI/Fomblin M30 by X‐ray photoelectron spectroscopy, which indicated that tribochemical reaction happened to PI and Fomblin M30 under high temperature as well as the simulation of friction heat. Copyright © 2015 John Wiley & Sons, Ltd.

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“…The EDS representative analysis of tribolayer shows that it contain Ti, Al, W, C, Co, O and N. The Fe and Cr presence is believed to be due to substrate (Table VII). According to the composition detected, the wear track consists possibly of WC and Co counterpart particles as well as of WO 3 , CoWO 4 , Al 2 O 3 and TiO 2 oxides with high cohesion and ductility [34], [37], [38]. The presence of CoWO 4 and WO 3 in the tribolayer can be related to the higher-oxygen presence by the hydrophilic capability of TiO 2 and Al 2 O 3 .…”

Section: Worn Surfacesmentioning

confidence: 99%

The Effect of Counterpart Material on the Sliding Wear of TiAlN Coatings Deposited by Reactive Cathodic Pulverization

et al. 2015

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This work aims to study the effect of the counterpart materials (100Cr6, Al2O3 and WC-Co) on the tribological properties of TiAlN thin films deposited on AISI H13 steel substrate by reactive magnetron co-sputtering. The structural characterization of the TiAlN films, performed by X-ray diffraction, showed (220) textured fcc crystalline structure. The values of hardness and elastic modulus obtained by nanoindentation were 27 GPa and 420 GPa, respectively, which resulted in films with a relatively high resistance to plastic deformation. Ball-on-disk sliding tests were performed using normal loads of 1 N and 3 N, and 0.10 m/s of tangential velocity. The wear coefficient of the films was determined by measuring the worn area using profilometry every 1000 cycles. The mechanical properties and the chemical stability of the counterpart material, debris formation and the contact stress influences the friction and the wear behavior of the studied tribosystems. Increasing the hardness of the counterpart decreases the coefficient of friction (COF) due to lower counterpart material transference and tribofilm formation, which is able to support the contact pressure. High shear stress concentration at the coating/substrate interface was reported for higher load promoting failure of the film-substrate system for all tribopairs.

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Friction coefficient and sliding wear of AlTiN coating under various lubrication conditions

Cited by 52 publications

References 16 publications

Research on the Thickness of the Friction Layer of Ni3Al Matrix Composites with Graphene Nanoplatelets

Research on the Thickness of the Friction Layer of Ni3Al Matrix Composites with Graphene Nanoplatelets

Effect of temperature on friction and wear behaviors of polyimide (PI)-based solid-liquid lubricating materials

The Effect of Counterpart Material on the Sliding Wear of TiAlN Coatings Deposited by Reactive Cathodic Pulverization

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